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9c128c0e49
Avoid complicated and error-prone parsing of df's output via sed(1), cut(1), etc., and instead use df's more modern --output option. * src/ioblksize.h (in a comment): Simplify the extraction of the device name of the mounted file system from df's output. * tests/dd/skip-seek-past-dev.sh: Likewise. * tests/du/2g.sh: Likewise for the 'avail' column here. Also avoid the deprecated use of "tail -NUM". * tests/misc/stat-mount.sh: While at it, remove the determination of the mount point of "." via df(1) plus sed(1) as it is unused since commit v8.5-159-gf57cb37 anyway. Instead, improve this test by verifying that the output of "stat -c%m ." at least starts with a slash '/'.
67 lines
2.0 KiB
Bash
Executable File
67 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
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# Ensure that du can handle a 2GB file (i.e., a file of size 2^31 bytes)
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# Before coreutils-5.93, on systems with a signed, 32-bit stat.st_blocks
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# one of du's computations would overflow.
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# Copyright (C) 2005-2014 Free Software Foundation, Inc.
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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. "${srcdir=.}/tests/init.sh"; path_prepend_ ./src
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print_ver_ du
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# Creating a 2GB file counts as 'very expensive'.
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very_expensive_
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# Get number of free kilobytes on current partition, so we can
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# skip this test if there is insufficient free space.
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free_kb=$(df -k --output=avail . | tail -n1)
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case "$free_kb" in
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[0-9]*) ;;
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*) skip_ "invalid size from df: $free_kb";;
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esac
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# Require about 3GB free.
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min_kb=3000000
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test $min_kb -lt $free_kb ||
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{
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skip_ \
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"too little free space on current partition: $free_kb (need $min_kb KB)"
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}
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big=big
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rm -f $big
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test -t 1 || printf 'creating a 2GB file...\n'
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for i in $(seq 100); do
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# Note: 2147483648 == 2^31. Print floor(2^31/100) per iteration.
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printf %21474836s x >> $big || fail=1
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# On the final iteration, append the remaining 48 bytes.
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test $i = 100 && { printf %48s x >> $big || fail=1; }
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test -t 1 && printf 'creating a 2GB file: %d%% complete\r' $i
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done
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echo
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du -k $big > out1 || fail=1
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rm -f $big
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sed 's/^2[0-9][0-9][0-9][0-9][0-9][0-9] '$big'$/~2M/' out1 > out
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cat <<\EOF > exp || fail=1
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~2M
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EOF
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compare exp out || fail=1
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Exit $fail
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